Bio-Based Polypropylene in Sustainable Packaging

Renewably-sourced biodegradable polyolefin packaging, utensils, and containers that can decompose under anaerobic conditions without UV light. The packaging, utensils, and containers are made by mixing renewable polyolefins with biodegrading agents. The biodegrading agents enhance biodegradation of the polyolefins. This allows the packaging, utensils, and containers to decompose in landfills without harming the environment.

Source

Heat sealable film made from propylene derived from bionaphtha that has reduced environmental impact compared to petroleum-based films. The film contains at least 10% bionaphtha-derived propylene units relative to the film mass and 300-1000 ppm of phosphorus-based antioxidant. This composition reduces change in color, transparency, and mechanical properties compared to films with lower bionaphtha content. The film can be used for packaging materials and laminated structures.

Source

Barrier films, packaging materials, containers, and products with improved barrier performance and lower environmental impact by using biomass-derived polyolefins in the substrate layer. The substrate layer contains a mixture of biomass-derived polyolefins and fossil fuel-derived polyolefins. The biomass content in the substrate is at least 5%. This composition prevents bleeding of low-molecular-weight components from the biomass polymer that can peel off the inorganic coating. The mixed substrate with biomass content improves adhesion to metal oxide coatings or printing layers.

Source

Enriched edible films for primary food packaging made from waste fruit peels like banana and jackfruit peels, to replace non-biodegradable plastics and foils. The films are made by extracting nutrients like antioxidants, vitamins, and minerals from the fruit peels, then combining them with biopolymers to create edible films that can be used as primary packaging for food. This provides a sustainable and nutritious alternative to plastic wraps, reduces waste, and enhances the nutritional value of packaged foods.

Source

A biomass-derived polymer for making lightweight, porous materials like sheets and bottles with improved properties for applications like display screens and packaging. The polymer is a biomass-derived 4-methyl-1-pentene polymer that is blended with a polyester resin. The polymer has a specific composition with 30-100 mol % 4-methyl-1-pentene units derived from biomass and 0-70 mol % units from other α-olefins. The blended resin can be processed into porous sheets or bottles with voids by stretching or blow molding. The biomass-derived polymer provides mechanical strength, light scattering, and biodegradability compared to fossil-based polymers.

Source

Preparing pectin from banana peels to make a natural packaging material for meat that preserves it and indicates its nature. The pectin is extracted from banana peels using lemon peel as an inducer. The pectin is then used to create a biofilm that can be applied to meat to preserve it and provide an indicator of freshness. The banana peel pectin also has antioxidant properties.

Source

Biodegradable and environmentally friendly plastic material that aims to reduce pollution compared to conventional plastics. The degradable plastic comprises components like polypropylene glycol succinate, starch from lotus root, wheat, and sweet potato, vegetable gum, cellulose, plasticizers, reinforcing agents, antioxidants, thermal stabilizers, and antistatic agents. The specific composition ratios are provided in the patent.

Source

Laminated packaging material that has a peelable layer to enable easy opening in clean environments without contaminating the contents. The laminate has two layers, one that peels off at 180 degrees angle and low peel strength, and another main layer with high peel strength. The peelable layer contains a biomass-derived resin and has a density of 0.909 g/cm. The main layer has polyolefin content of 82% or more. This configuration allows the peelable layer to be easily removed to expose a clean surface on the main layer for use in clean environments. The biomass resin in the peelable layer suppresses bulging between layers. The low peel strength prevents adhesion of contaminants.

Source

Sealant composition for packaging applications that provides improved environmental friendliness while maintaining adhesion and easy-opening properties. The sealant composition contains propylene polymer, ethylene polymer, and ethylene/unsaturated carboxylic acid copolymer or its ionomer. The copolymer and ionomer can be made from biomass-derived monomers. The overall composition has a biomass content between 0-100%. This allows using renewable resources in the sealant without sacrificing adhesion and peelability compared to fossil fuel-based sealants.

Source

Resin composition for sealants in packaging applications that provides improved properties like adhesion and easy opening compared to fossil fuel-derived sealants, while also being environmentally friendly. The composition contains specific ratios of biomass-derived propylene polymer, ethylene polymer, and tackifier resin. It uses biomass-derived structural units in the propylene polymer, biomass ethylene in the ethylene polymer, and optionally biomass-derived tackifier resin. The biomass content is at least 0% and less than 100% by mass. This composition balances sealing strength and ease of opening for packaging materials like laminates and lids.

Source

Polypropylene composite material containing plant fibers with improved properties like strength and water resistance. The composite has 60-75% polypropylene, 10-35% plant fiber, 1-5% compatibilizer, 1-4% phenolic acid compounds, and 0-5% additives. The phenolic acid compounds react with fiber hydroxyls to form crosslinks, enhance strength, and delay oxidation. The compatibilizer improves polypropylene-fiber adhesion. The composite has reduced water absorption after processing compared to fiber-reinforced polypropylene.

Source

A method for producing nanocellulose using a hydrolysis process that involves treating cellulose-containing material with a hydrolyzing agent to break down the cellulose into nanocellulose. The hydrolyzing agent may be an enzyme, a mineral acid, or a combination thereof. The enzyme may be derived from a microorganism, such as a fungus or bacteria. The method may also include steps for filtering and drying the nanocellulose to obtain a final product. The resulting nanocellulose has various applications, such as in food and beverage products, cosmetics, and pharmaceuticals, due to its unique properties, such as high surface area, high aspect ratio, and biocompatibility.

Source

Biodegradable packaging made from renewable sources like sugarcane and starch-containing agricultural waste. The packaging is formed by blending biodegradable additives with renewably sourced polyolefins like polyethylene and polypropylene. The additives enhance biodegradability of the packaging without affecting its durability. The biodegradable additives contain hydrophilic compounds that make the plastic more susceptible to microbial degradation. The packaging can be used for food items like ice cream and then biodegrade in landfills or composting facilities without polluting the environment.

Source

Bio-based plastic composite containing a blend of non-biodegradable bio-based polypropylene and petroleum-based polypropylene. The composite has improved mechanical properties and can be manufactured using existing processing equipment. The bio-based polypropylene is derived from renewable sources like bioethanol. Additives like talc and rubber can be used to further enhance properties. The blending temperature is 170-180°C. This allows using conventional extrusion and injection molding equipment to manufacture the composite. The composite has better properties like tensile strength, elongation, and modulus compared to using just bio-based polypropylene.

Source

Bio-based plastic composite containing non-biodegradable bio-based polypropylene and petroleum-based polypropylene, manufactured by thermomechanical kneading at 170-180°C. The composite has improved mechanical properties compared to pure bio-based polypropylene. It contains 5-65% bio-based polypropylene and 25-90% petroleum polypropylene. Additives like talc and rubber can be used. The composite has better physical properties like tensile strength and flexural modulus than bio-based polypropylene alone.

Source

Polypropylene composite material with improved secondary processing performance and compatibility between polypropylene and plant fibers. The composition contains 20-69 wt% polypropylene resin, 0.5-2 wt% p-toluidine, and 0.5-4 wt% compatibilizer. The p-toluidine forms hydrogen bonds with the cellulose in the plant fibers, improving fiber dispersion and material rigidity. The compatibilizer further enhances fiber dispersion and processing properties. The specific polypropylene crystallinity range is 35-50%.

Source

A high recycled content polymer composition for durable consumer products like packaging that contains at least 60 wt% recycled polyolefins like recycled PP (rPP) and recycled PE (rPE), along with other components like a heterophasic propylene ethylene copolymer and a polyolefin elastomer. The recycled PP is reacted with a peroxide before adding the other components to shift its melt flow rate for improved properties. The composition also contains finely ground talcum to enhance strength and flow. The specific component ratios, order of addition, and peroxide shifting step are crucial to achieve balanced properties like reduced tiger striping, good impact strength, and moldability from high recycled content.

Source

Propylene-based polymer composition with biomass content for making molded articles that have high rigidity, impact resistance and do not crack even when containing biomass polyethylene. The composition contains a block copolymer of propylene and ethylene/alpha-olefins, a random copolymer of propylene/ethylene/alpha-olefins, and biomass polyethylene. The block copolymer has specific ethylene content and melt flow rate, the random copolymer has specific ethylene/alpha-olefin content and melt flow rate, and the biomass polyethylene has specific content. This composition improves miscibility between the block copolymer and biomass polyethylene to prevent cracking.

Source

Propylene-based polymer composition with biomass content of 8.4-49% that provides molded articles with good rigidity and impact resistance without cracking. The composition contains 51-95 wt% of a propylene block copolymer and 5-49 wt% biomass polyethylene. The propylene block copolymer has specific ethylene and α-olefin content and melt flow rate. This composition allows mixing biomass polyethylene into propylene polymers without compromising properties.

Source

Packaging material with improved adhesion between the substrate layer containing biomass-derived polyolefin and the printed layer. The packaging material has a base layer made of biomass-derived polyolefin with at least 5% biomass content. An outer fossil fuel-derived polyolefin layer is added on the printed side. This improves adhesion compared to using only biomass-derived polyolefin. An optional adhesion layer between the fossil and printed layers further enhances bonding. Drying the adhesion layer can help.

Source